Radioluminescence and optical studies of gadolinium calcium phosphate oxyfluoride glasses doped with Sm3

Sm3+-doped gadolinium calcium phosphate oxyfluoride glasses have been synthesized and investigated their optical, photo and radioluminescence properties. The glasses were prepared by melt quenching technique at 1400°C. The characteristic absorption bands of Sm3+ ions originating from the 6H5/2 ground state and occurring absorbed photon in visible light (VIS) and near-infrared (NIR) region with clearly observed from absorption spectra. From the photoluminescence (PL), the glasses showed the emission at 561 (4G5/2→6H5/2), 598 (4G5/2→6H7/2), 644 (4G5/2→6H9/2) and 705nm (4G5/2→6H11/2). The radioluminescence (RL), emission spectra were corresponding to those from PL measurements. From RL measurement, the integral scintillation efficiency of developed glass was determined at 43% when compared with BGO crystal. •Sm3+-doped gadolinium calcium phosphate oxyfluoride glasses have been prepared.•Emission intensities increased with increasing of fluoride content.•The CIE color coordinates for all host which is fall on orange region.•IH model were fitted for S=6 indicating the dipole–dipole interaction between Sm3+ ions.•Integral scintillation of glass is 43% of BGO crystal.